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post #1 of 4 (permalink) Old 10-28-09, 04:05 PM Thread Starter
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1989 3.0 Ford Aerostar, Heater Hose Diagram

Hello, I've ran a search for the possibility that someone may have the information previously answered but I can't seem to find it.

Ive been having overheating issues with my van. So I replaced the tstat, waterpump, Radcap. I had to remove the radiator and the fan to get to the water pump with decent space. I still have issues with overheating so I was wondering if perhaps I put the heater hoses on incorrectly. The only 2 that I could possibly confuse would be the last hookup off the 3 hose junction coming from the heatercore, and the last hose off the 2 hose junction. They hook up into the metal pipes that run down and connect to the radiator. I have a manual but there isn't any diagrams or pictures of any sort showing the way the connections should look.

Ive searched the web to maybe catch a glimpse of a 3.0 aerostar with the hoodup and close enough to see, but I can't seem to find any. My van has powersteering/AC/automatic trans. And I have flushed till the water is clean several times. Usually everytime I end up draining any fluid with replacing a part.

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post #2 of 4 (permalink) Old 10-28-09, 05:32 PM
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Re: 1989 3.0 Ford Aerostar, Heater Hose Diagram

I can't remember the hose direction but it wouldn't make a difference. Are you sure it's getting hot? Does it push coolant out of the radiator cap when it gets hot?
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post #3 of 4 (permalink) Old 11-07-09, 12:31 PM Thread Starter
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Re: 1989 3.0 Ford Aerostar, Heater Hose Diagram

Yes it does, doesn't have to be on very long either.
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post #4 of 4 (permalink) Old 11-07-09, 01:51 PM
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Re: 1989 3.0 Ford Aerostar, Heater Hose Diagram

If it does it VERY quick, it's possible the head gasket is blown. There's a tester that has a fluid in it and if there's exhaust in the cooling system, it turns from blue to green. I think they're around $25.
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